因為它是重讀閉音節。She moved a step closer to me.
她朝我靠近一步。
There was a bounce to his step.
他的步伐矯健有力。
He took a step towards the door.
他朝門口邁了一步。
I took a step toward him.
我朝他邁出了一步。
He took a step backwards.
他退後一步。